Mizuno JPX 923 Hot Metal IronsThe Mizuno JPX 923 Hot Metal Irons are designed to deliver exceptional distance, forgiveness, and feel, making them ideal for a wide range of golfers. Here's a closer look at the key features: Chromoly Construction: The JPX 923 Hot Metal Irons are made with a new, stronger Chromoly material that enhances the club's durability and allows for a thinner face, increasing ball speed for more distance. This material also contributes to the club's soft feel